Butchon, R., T. Liabsuetrakul, T. Bumpenboon, and Y. Teerawattananon. “Anxiety at First and Subsequent Pregnancies and Its Associated Factors: A Historical Cohort Study From Northeastern Thailand”. Journal of Health Science and Medical Research, vol. 37, no. 4, Aug. 2019, pp. 259-68, doi:10.31584/jhsmr.201959.